private static void FoldLine(Paragraph paragraph, TextLine line, Win32DCSafeHandle hdc, FontCache fontCache, FlowContext flowContext, bool wordTrim, Stack <int> lineRunsIndex, Stack <int> lineRunsCharIndex, float maxWidth, int lineIndents)
{
int count = line.LogicalRuns.Count;
float num = 0f;
for (int i = 0; i < count; i++)
{
num += (float)line.LogicalRuns[i].GetWidth(hdc, fontCache);
}
int num2 = -1;
bool flag = false;
for (int num3 = count - 1; num3 >= 0; num3--)
{
TextRun textRun = line.LogicalRuns[num3];
num -= (float)textRun.GetWidth(hdc, fontCache);
SCRIPT_LOGATTR?nextCharLogAttr = null;
if (num3 != count - 1)
{
TextRun textRun2 = line.LogicalRuns[num3 + 1];
if (textRun2.CharacterCount > 0)
{
nextCharLogAttr = textRun2.ScriptLogAttr[0];
}
}
if (!textRun.IsPlaceholderTextRun)
{
flag = true;
int num4 = 0;
num4 = ((!wordTrim) ? LineBreaker.FindFoldTextPosition_CharacterTrim(textRun, hdc, fontCache, maxWidth - num) : LineBreaker.FindFoldTextPosition_TextRunTrim(textRun, hdc, fontCache, maxWidth - num, nextCharLogAttr));
if (num4 > 0)
{
LineBreaker.FoldLineAt(line, num3, num4, flowContext.Context, lineRunsIndex, lineRunsCharIndex);
return;
}
}
else if (num2 > 0 && textRun.TextRunProperties.IndexInParagraph != num2)
{
flag = true;
}
num2 = textRun.TextRunProperties.IndexInParagraph;
}
if (line.LogicalRuns.Count > 1)
{
if (flag)
{
int num5;
for (num5 = line.LogicalRuns.Count - 1; num5 > 0; num5--)
{
flowContext.Context.TextRunIndex = lineRunsIndex.Pop();
flowContext.Context.TextRunCharacterIndex = lineRunsCharIndex.Pop();
TextRun textRun3 = line.LogicalRuns[num5];
if (!textRun3.IsPlaceholderTextRun)
{
break;
}
if (textRun3.CharacterIndexInOriginal == 0)
{
break;
}
}
line.LogicalRuns.RemoveRange(num5, line.LogicalRuns.Count - num5);
}
}
else if (flag)
{
int num6 = 1;
if (maxWidth > 0.0)
{
flowContext.ForcedCharTrim = true;
if (flowContext.VerticalCanGrow)
{
int num7 = default(int);
num6 = LineBreaker.FindWidthToBreakPosition(line.LogicalRuns[0], hdc, fontCache, maxWidth, out num7);
flowContext.CharTrimmedRunWidth = Math.Max(flowContext.CharTrimmedRunWidth, num7 + lineIndents);
}
else
{
num6 = LineBreaker.FindFoldTextPosition_CharacterTrim(line.LogicalRuns[0], hdc, fontCache, maxWidth);
}
if (num6 == 0)
{
num6 = 1;
}
}
else if (line.FirstLine && paragraph.ParagraphProps.HangingIndent > 0.0)
{
num6 = 0;
if (flowContext.Updatable)
{
paragraph.Updated = true;
}
}
LineBreaker.FoldLineAt(line, 0, num6, flowContext.Context, lineRunsIndex, lineRunsCharIndex);
}
}
private static void RenderParagraph(TextBox textBox, Paragraph paragraph, Win32DCSafeHandle hdc, FontCache fontCache, int offsetX, ref int offsetY, Rectangle layoutRectangle, float dpiX)
{
List <TextLine> textLines = paragraph.TextLines;
IParagraphProps paragraphProps = paragraph.ParagraphProps;
bool flag = textBox.TextBoxProps.Direction == RPLFormat.Directions.LTR;
RPLFormat.TextAlignments textAlignments = paragraphProps.Alignment;
if (textAlignments == RPLFormat.TextAlignments.General)
{
textAlignments = textBox.TextBoxProps.DefaultAlignment;
if (!flag)
{
switch (textAlignments)
{
case RPLFormat.TextAlignments.Right:
textAlignments = RPLFormat.TextAlignments.Left;
break;
case RPLFormat.TextAlignments.Left:
textAlignments = RPLFormat.TextAlignments.Right;
break;
}
}
}
int num = TextBox.ConvertToPixels(paragraphProps.LeftIndent, dpiX);
int num2 = TextBox.ConvertToPixels(paragraphProps.RightIndent, dpiX);
int num3 = TextBox.ConvertToPixels(paragraphProps.HangingIndent, dpiX);
if (num3 < 0)
{
if (flag)
{
num -= num3;
}
else
{
num2 -= num3;
}
}
if (paragraphProps.ListLevel > 0)
{
int num4 = paragraphProps.ListLevel * TextBox.ConvertToPixels(10.583333f, dpiX);
if (flag)
{
num += num4;
}
else
{
num2 += num4;
}
}
if (textLines == null || textLines.Count == 0)
{
offsetY += TextBox.ConvertToPixels(paragraphProps.SpaceBefore, dpiX);
offsetY += TextBox.ConvertToPixels(paragraphProps.SpaceAfter, dpiX);
}
else
{
Graphics graphics = null;
try
{
for (int i = 0; i < textLines.Count; i++)
{
TextLine textLine = textLines[i];
int ascent = textLine.GetAscent(hdc, fontCache);
textLine.GetDescent(hdc, fontCache);
int height = textLine.GetHeight(hdc, fontCache);
if (textLine.FirstLine)
{
offsetY += TextBox.ConvertToPixels(paragraphProps.SpaceBefore, dpiX);
}
int baselineY = offsetY + ascent;
offsetY += height;
int num5;
switch (textAlignments)
{
case RPLFormat.TextAlignments.Left:
num5 = num;
break;
case RPLFormat.TextAlignments.Center:
{
int num6 = 0;
num6 = ((!textBox.HorizontalText) ? layoutRectangle.Height : layoutRectangle.Width);
num5 = num + (num6 - num - num2) / 2 - textLine.GetWidth(hdc, fontCache) / 2;
break;
}
default:
num5 = ((!textBox.HorizontalText) ? (layoutRectangle.Height - num2 - textLine.GetWidth(hdc, fontCache)) : (layoutRectangle.Width - num2 - textLine.GetWidth(hdc, fontCache)));
break;
}
if (textLine.Prefix != null && textLine.Prefix.Count > 0)
{
int num7 = (!flag) ? (num5 + textLine.GetWidth(hdc, fontCache) + TextBox.ConvertToPixels(4.233333f, dpiX)) : (num5 - TextBox.ConvertToPixels(4.233333f, dpiX) - textLine.GetPrefixWidth(hdc, fontCache));
if (num3 < 0)
{
if (flag && textAlignments == RPLFormat.TextAlignments.Left)
{
num7 += num3;
}
else if (!flag && textAlignments == RPLFormat.TextAlignments.Right)
{
num7 -= num3;
}
}
for (int j = 0; j < textLine.Prefix.Count; j++)
{
TextRun textRun = textLine.Prefix[j];
textBox.TextBoxProps.DrawTextRun(textRun, paragraph, hdc, dpiX, fontCache, num7, offsetY, baselineY, height, layoutRectangle);
num7 += textRun.GetWidth(hdc, fontCache);
}
}
if (textLine.FirstLine && num3 != 0)
{
if (flag)
{
switch (textAlignments)
{
case RPLFormat.TextAlignments.Left:
num5 += num3;
break;
case RPLFormat.TextAlignments.Center:
num5 += num3 / 2;
break;
}
}
else
{
switch (textAlignments)
{
case RPLFormat.TextAlignments.Right:
num5 -= num3;
break;
case RPLFormat.TextAlignments.Center:
num5 -= num3 / 2;
break;
}
}
}
int prevRunWidth = 0;
int prevRunX = 0;
TextRun prevRun = null;
int count = textLine.VisualRuns.Count;
for (int k = 0; k < count; k++)
{
TextRun textRun2 = textLine.VisualRuns[k];
int width = textRun2.GetWidth(hdc, fontCache, k == count - 1);
if (!textRun2.IsHighlightTextRun)
{
if (width > 0)
{
textBox.TextBoxProps.DrawTextRun(textRun2, paragraph, hdc, dpiX, fontCache, num5, offsetY, baselineY, height, layoutRectangle);
}
}
else
{
bool flag2 = (flag && k + 1 == count) || (!flag && k == 0);
if (width > 0 || flag2)
{
if (graphics == null)
{
graphics = Graphics.FromHdc(hdc.Handle);
}
TextBox.RenderHighlightedTextRun(textBox, paragraph, textRun2, prevRun, hdc, graphics, fontCache, dpiX, num5, offsetY, baselineY, height, layoutRectangle, width, prevRunWidth, prevRunX, flag2, textLine.LastLine);
}
}
prevRunX = num5;
prevRunWidth = width;
num5 += width;
prevRun = textRun2;
}
if (textLine.LastLine)
{
offsetY += TextBox.ConvertToPixels(paragraphProps.SpaceAfter, dpiX);
}
}
}
finally
{
if (graphics != null)
{
graphics.Dispose();
graphics = null;
}
}
}
}
private static bool FlowParagraph(Paragraph paragraph, RPLFormat.Directions direction, Win32DCSafeHandle hdc, float dpiX, FontCache fontCache, FlowContext flowContext, bool keepLines, SizeF flowContextSize, ref int contentOffset)
{
List <TextLine> list = new List <TextLine>();
TextBoxContext context = flowContext.Context;
int num = paragraph.OffsetY;
paragraph.ProcessedEmptyParagraph = false;
bool flag = false;
IParagraphProps paragraphProps = paragraph.ParagraphProps;
if (!flowContext.Updatable || !paragraph.Updated)
{
flag = (context.TextRunIndex == 0 && context.TextRunCharacterIndex == 0);
}
if (flag)
{
num += TextBox.ConvertToPixels(paragraphProps.SpaceBefore, dpiX);
if ((float)num >= flowContextSize.Height)
{
paragraph.Height = num - paragraph.OffsetY;
return(false);
}
}
int num2 = contentOffset;
float num3 = 0f;
float num4 = 0f;
float num5 = 0f;
paragraph.GetParagraphIndents(direction, dpiX, out num3, out num4, out num5);
Stack <int> stack = null;
Stack <int> stack2 = null;
TextLine textLine = null;
while (true)
{
float num6 = num3;
float num7 = num4;
if (flag)
{
if (direction == RPLFormat.Directions.LTR)
{
num6 += num5;
}
else
{
num7 += num5;
}
}
stack = new Stack <int>();
stack2 = new Stack <int>();
textLine = new TextLine();
if (flag)
{
textLine.Prefix = LineBreaker.CreateLinePrefix(paragraph, direction);
textLine.FirstLine = true;
}
if (!LineBreaker.GetLine(paragraph, textLine, hdc, fontCache, flowContext, num6, flowContextSize.Width - num7, flowContextSize.Height - (float)num, stack, stack2, (int)(num6 + num7)))
{
if (list.Count > 0)
{
list[list.Count - 1].LastLine = true;
}
num += TextBox.ConvertToPixels(paragraphProps.SpaceAfter, dpiX);
break;
}
if (keepLines)
{
textLine.ScriptLayout(hdc, fontCache);
}
num += textLine.GetHeight(hdc, fontCache);
list.Add(textLine);
num2 = num;
if ((float)num >= flowContextSize.Height)
{
break;
}
flag = false;
}
paragraph.Height = num - paragraph.OffsetY;
if ((float)num > flowContextSize.Height)
{
if (list.Count > 0 && (float)num2 > flowContextSize.Height)
{
TextLine textLine2 = list[list.Count - 1];
int textRunIndex = 0;
int textRunCharacterIndex = 0;
while (stack.Count > 0)
{
textRunIndex = stack.Pop();
}
while (stack2.Count > 0)
{
textRunCharacterIndex = stack2.Pop();
}
if (flowContext.LineLimit)
{
context.TextRunIndex = textRunIndex;
context.TextRunCharacterIndex = textRunCharacterIndex;
list.RemoveAt(list.Count - 1);
flowContext.OmittedLineHeight = TextBox.ConvertToMillimeters(textLine2.GetHeight(hdc, fontCache), dpiX);
if (textLine2.FirstLine)
{
num2 -= TextBox.ConvertToPixels(paragraphProps.SpaceBefore, dpiX);
}
}
else
{
TextBoxContext textBoxContext = context.Clone();
textBoxContext.TextRunIndex = textRunIndex;
textBoxContext.TextRunCharacterIndex = textRunCharacterIndex;
flowContext.ClipContext = textBoxContext;
}
num2 -= textLine2.GetHeight(hdc, fontCache);
}
paragraph.AdvanceToNextRun(context, false);
paragraph.AdvanceToNextRun(flowContext.ClipContext, false);
if (list.Count > 0)
{
if (flowContext.ClipContext == null && paragraph.AtEndOfParagraph(context))
{
contentOffset = num;
}
else
{
contentOffset = num2;
}
paragraph.TextLines = list;
return(true);
}
paragraph.TextLines = null;
if (paragraph.AtEndOfParagraph(context))
{
contentOffset = num;
}
return(false);
}
paragraph.AdvanceToNextRun(context);
paragraph.TextLines = list;
contentOffset = num;
return(true);
}
